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A ray of light travelling in air enters ...

A ray of light travelling in air enters obliquely into water. Does the light ray bend towards the normal or away from the normal ? Why ?

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The light ray bends towards the normal. When a ray of light travels from an optically rarer medium to an optically denser medium, it gets bent towards the normal. Since water is optically denser than air, a ray of light travelling from air into the water will bend towards the normal.
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NCERT-LIGHT - REFLECTION AND REFRACTION-Exercise
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  2. A concave mirror produces three times magnified real image of an objec...

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  3. A ray of light travelling in air enters obliquely into water. Does the...

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  4. (a) The refractive index of glass is 1.5. What is the speed of light i...

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  5. Find out, from Table 10.3, the medium having highest optical density. ...

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  6. You are given kerosene, turpentine and water. In which of these does t...

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  7. The refractive index of diamond is 2.42. What is the meaning of this s...

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  8. Define one dioptre of power of a lens.

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  9. A convex lens forms a real and inverted image of a needle at a distanc...

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  10. Find the power of a concave lens of focal length 2 m.

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  11. Which one of the following materials cannot be used to make a lens ?

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  12. The image formed by a concave mirror is observed to be virtual, erect ...

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  13. Where should an object be placed in front of a convex lens to get a re...

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  14. A spherical mirror and a thin spherical lens each have a focal length ...

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  15. No matter how far you stand from a spherical mirror, your image appear...

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  16. Which of the following lenses would you prefer to use while reading sm...

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  17. We wish to obtain an erect image of an object, using a concave mirror ...

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  18. Name the type of mirror used in the following situations : (a) Head ...

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  19. One half of a convex lens is covered with a black paper. Will this len...

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  20. An object 5 cm in length is held 25 cm away from a converging lens of ...

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